EP3717805B1 - Kolbenring - Google Patents

Kolbenring Download PDF

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Publication number
EP3717805B1
EP3717805B1 EP18811242.9A EP18811242A EP3717805B1 EP 3717805 B1 EP3717805 B1 EP 3717805B1 EP 18811242 A EP18811242 A EP 18811242A EP 3717805 B1 EP3717805 B1 EP 3717805B1
Authority
EP
European Patent Office
Prior art keywords
piston ring
layer
chrome layer
dlc coating
chrome
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18811242.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3717805A1 (de
Inventor
Walter Stumpf
Steffen Hoppe
Ralf Lammers
Rudolf Linde
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Federal Mogul Burscheid GmbH
Original Assignee
Federal Mogul Burscheid GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Federal Mogul Burscheid GmbH filed Critical Federal Mogul Burscheid GmbH
Priority to EP23192651.0A priority Critical patent/EP4290101A3/de
Publication of EP3717805A1 publication Critical patent/EP3717805A1/de
Application granted granted Critical
Publication of EP3717805B1 publication Critical patent/EP3717805B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/343—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one DLC or an amorphous carbon based layer, the layer being doped or not
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
    • C23C14/0605—Carbon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
    • C23C28/322—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer only coatings of metal elements only
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
    • C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
    • C23C28/347—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with layers adapted for cutting tools or wear applications
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D15/00—Electrolytic or electrophoretic production of coatings containing embedded materials, e.g. particles, whiskers, wires
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/04—Electroplating: Baths therefor from solutions of chromium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F5/00—Piston rings, e.g. associated with piston crown

Definitions

  • the invention relates to a piston ring.
  • a piston ring which has a DLC layer on the running surface, in other words the lateral surface, in particular with regard to good wear behavior.
  • the flank surfaces are nitrided, but can have a coating.
  • the DE 10 2007 038 188 A1 relates to a piston ring with a galvanic chromium layer on which a PVD layer is applied.
  • the EP 3 163 130 A1 discloses a piston ring wherein the top layer of the tread is a DLC layer and the top layer of the flank faces is a chromium layer.
  • the invention is based on the object of creating a piston ring that is improved in terms of wear behavior and/or friction and/or manufacturing complexity.
  • the running surface has coated running and flank surfaces, with the uppermost layer of the running surface being a DLC layer and the uppermost layer of at least one flank surface being a chromium layer.
  • At least the lower flank surface in other words that flank surface of a piston ring which is intended to face away from the combustion chamber, is preferably coated.
  • the second flank surface can be uncoated or coated, in particular provided with a chromium layer.
  • the DLC layer on the tread ensures low wear and comparatively low friction and is also resistant to scuff marks.
  • the chromium layer on at least one flank surface can be applied more easily and cost-effectively, for example compared to a DLC layer, and also ensures low wear in this area.
  • the reduced wear is also in terms of the so-called blow-by, in other words an unwanted one Oil flow past the oil scraper ring, relevant.
  • a high level of wear on the lower flanks of piston rings in the first groove causes increased blow-by. If this exceeds the oil separation effect of the engine ventilation, oil is transported out of the crankcase via the blow-by flow, and the oil consumption of the engine increases to an impermissible extent.
  • the piston ring can twist in the groove with excessive wear of the flank surfaces with the running surface facing downwards under load, so that the lower edge of the running surface scrapes off oil more poorly and oil consumption increases.
  • the piston ring can break due to excessive axial play in the groove.
  • DLC layer Particularly favorable properties are expected for the DLC layer if it is hydrogen-free, but a hydrogen-containing DLC layer can also be advantageous in certain applications.
  • the DLC layer can be formed on a chromium layer in some areas, as in the invention. This applies to both running and flank surfaces.
  • the DLC layer at least partially overlaps the chromium layer in the area of the peripheral edges.
  • the chromium layer runs out towards the peripheral edge.
  • the peripheral edges can also be machined at a defined angle.
  • a PVD (Physical Vapor Deposition) method is preferred.
  • the chrome layer has a hardness of at least 800 HV 0.1.
  • the crack network density of the chromium layer it is preferred, in particular with regard to the possible particle inclusions, that this has a crack rate of 700 to 1200 cracks/cm.
  • a coefficient of friction in the lubricated frictional contact for the chromium layer that is at least 20% lower than that of nitrided chromium steel is preferred.
  • the chromium layer can be processed, preferably combined with a galvanic application, in such a way that the roughness of the flank surfaces is subsequently less than Rz 4.
  • the chromium layer can have particle deposits, which can be embedded in the network of cracks in the chromium layer in particular.
  • a piston ring 10 typically has a rectangular cross-section with a running surface 12 and flank surfaces running essentially perpendicularly thereto, of which the lower flank surface is denoted by 14 .
  • the lower flank surface 14 is provided with a chrome layer and the running surface is provided with a DLC layer.
  • the measure is shown here, according to which the DLC layer overlaps the chromium layer, particularly in the transition area between the running surface 12 and the flank surface 14 . In the example shown, the transition is rounded, but it can also be oblique.
  • the chromium layer extends with decreasing thickness up to the (in the Figures vertical) tread 12, and the DLC layer also with decreasing thickness approximately up to the beginning of the (horizontal in the figure) flank surface 14.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrochemistry (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Chemical Vapour Deposition (AREA)
EP18811242.9A 2017-11-30 2018-11-28 Kolbenring Active EP3717805B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23192651.0A EP4290101A3 (de) 2017-11-30 2018-11-28 Kolbenring

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017221606.9A DE102017221606A1 (de) 2017-11-30 2017-11-30 Kolbenring
PCT/EP2018/082789 WO2019105979A1 (de) 2017-11-30 2018-11-28 Kolbenring

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP23192651.0A Division EP4290101A3 (de) 2017-11-30 2018-11-28 Kolbenring

Publications (2)

Publication Number Publication Date
EP3717805A1 EP3717805A1 (de) 2020-10-07
EP3717805B1 true EP3717805B1 (de) 2023-08-23

Family

ID=64556914

Family Applications (2)

Application Number Title Priority Date Filing Date
EP23192651.0A Pending EP4290101A3 (de) 2017-11-30 2018-11-28 Kolbenring
EP18811242.9A Active EP3717805B1 (de) 2017-11-30 2018-11-28 Kolbenring

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP23192651.0A Pending EP4290101A3 (de) 2017-11-30 2018-11-28 Kolbenring

Country Status (8)

Country Link
US (1) US11408508B2 (ja)
EP (2) EP4290101A3 (ja)
JP (2) JP2021504633A (ja)
KR (1) KR102662928B1 (ja)
CN (1) CN111133235A (ja)
BR (1) BR112020004751B1 (ja)
DE (1) DE102017221606A1 (ja)
WO (1) WO2019105979A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022101416A1 (en) * 2020-11-13 2022-05-19 Nanofilm Vacuum Coating (Shanghai) Co., Ltd. Piston rings and methods of manufacture

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008017270B3 (de) * 2008-04-04 2009-06-04 Federal-Mogul Burscheid Gmbh Strukturierte Chrom-Feststoffpartikel-Schicht und Verfahren zu deren Herstellung sowie beschichtetes Maschinenelement
DE102011003254A1 (de) * 2011-01-27 2012-08-02 Federal-Mogul Burscheid Gmbh Gleitelement, insbesondere Kolbenring, mit einer Beschichtung sowie Verfahren zur Herstellung eines Gleitelements
EP3163130A1 (en) * 2014-06-30 2017-05-03 Nippon Piston Ring Co., Ltd. Piston ring

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DE3531410A1 (de) 1985-09-03 1987-03-05 Goetze Ag Galvanische hartchromschicht
JP3148655B2 (ja) * 1996-09-05 2001-03-19 帝国ピストンリング株式会社 摺動部材
US6013380A (en) 1996-11-11 2000-01-11 Teiko Piston Ring Co., Ltd. Composite chromium plating film and sliding member covered thereof
JP2000120870A (ja) * 1998-10-15 2000-04-28 Teikoku Piston Ring Co Ltd ピストンリング
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JP4203365B2 (ja) 2003-06-20 2008-12-24 帝国ピストンリング株式会社 ピストンリング
JP5013445B2 (ja) 2005-03-09 2012-08-29 株式会社豊田中央研究所 ピストンリング、それを備えたピストンおよびそれらの使用方法
BRPI0506343A (pt) 2005-12-21 2006-12-05 Mahle Metal Leve Sa anel de pistão com cobertura de nitreto de cromo
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CN203584733U (zh) 2013-12-17 2014-05-07 成都展望能源机械有限公司 组合式压缩机铬基陶瓷复合镀层活塞环
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CN107059003B (zh) 2017-03-23 2019-05-07 南京飞燕活塞环股份有限公司 一种降低活塞环与缸套间摩擦磨损的方法
CN206617243U (zh) 2017-03-30 2017-11-07 福建东亚机械有限公司 一种外圆镀有复合涂层的刮片环

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008017270B3 (de) * 2008-04-04 2009-06-04 Federal-Mogul Burscheid Gmbh Strukturierte Chrom-Feststoffpartikel-Schicht und Verfahren zu deren Herstellung sowie beschichtetes Maschinenelement
DE102011003254A1 (de) * 2011-01-27 2012-08-02 Federal-Mogul Burscheid Gmbh Gleitelement, insbesondere Kolbenring, mit einer Beschichtung sowie Verfahren zur Herstellung eines Gleitelements
EP3163130A1 (en) * 2014-06-30 2017-05-03 Nippon Piston Ring Co., Ltd. Piston ring

Also Published As

Publication number Publication date
KR102662928B1 (ko) 2024-05-02
CN111133235A (zh) 2020-05-08
EP4290101A3 (de) 2024-02-28
WO2019105979A1 (de) 2019-06-06
JP2023133290A (ja) 2023-09-22
BR112020004751A2 (pt) 2020-09-15
EP4290101A2 (de) 2023-12-13
US11408508B2 (en) 2022-08-09
JP2021504633A (ja) 2021-02-15
US20200309263A1 (en) 2020-10-01
BR112020004751B1 (pt) 2024-01-16
EP3717805A1 (de) 2020-10-07
DE102017221606A1 (de) 2019-06-06
KR20200092935A (ko) 2020-08-04

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